Hekate and fusee use FatFs and do not care at all for this bit (which is the normal behavior). ftpd/hbmenu and many other work only with this unset. There are cases where Retroarch breaks if it's unset. So it wants it set for retroarch folder. All of it falls in the Horizon's filesystem driver and content management (fs and ncm/ns). Maybe a version of libnx can be produced that manages this and stops the automatic usage of archive bit by Horizon for homebrew. Btw, backing up your sd card or migrating to a new one, fucks with this in windows and any other platform that does not copy pastes the attributes as is.. (Which is the most used platform.) For me, the first time I migrated, it broke all my games and album photos/videos. Because the arc bit was set to all of them. Because I don't like methods like formatting and re-downloading everything, I researched a bit and found out around august/October that the fault is the archive bit. I unset it and this fixed my games and album "magically".